• file
• revisions
• annotate
• diff
• comparison
• raw

src/share/vm/oops/typeArrayKlass.hpp@a9becfeecd1b (annotated)

src/share/vm/oops/typeArrayKlass.hpp

Wed, 22 Jan 2014 17:42:23 -0800

author

kvn

date

Wed, 22 Jan 2014 17:42:23 -0800

changeset 6503

a9becfeecd1b

parent 6198

55fb97c4c58d

child 6876

710a3c8b516e

permissions

-rw-r--r--

Merge

duke@435	1	/*
mikael@6198	2	* Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
stefank@2314	25	#ifndef SHARE_VM_OOPS_TYPEARRAYKLASS_HPP
stefank@2314	26	#define SHARE_VM_OOPS_TYPEARRAYKLASS_HPP
stefank@2314	27
coleenp@4037	28	#include "classfile/classLoaderData.hpp"
stefank@2314	29	#include "oops/arrayKlass.hpp"
stefank@2314	30
coleenp@4142	31	// A TypeArrayKlass is the klass of a typeArray
duke@435	32	// It contains the type and size of the elements
duke@435	33
coleenp@4142	34	class TypeArrayKlass : public ArrayKlass {
duke@435	35	friend class VMStructs;
duke@435	36	private:
duke@435	37	jint _max_length; // maximum number of elements allowed in an array
coleenp@4037	38
coleenp@4037	39	// Constructor
coleenp@4142	40	TypeArrayKlass(BasicType type, Symbol* name);
coleenp@4142	41	static TypeArrayKlass* allocate(ClassLoaderData* loader_data, BasicType type, Symbol* name, TRAPS);
duke@435	42	public:
coleenp@4142	43	TypeArrayKlass() {} // For dummy objects.
coleenp@4037	44
duke@435	45	// instance variables
duke@435	46	jint max_length() { return _max_length; }
duke@435	47	void set_max_length(jint m) { _max_length = m; }
duke@435	48
duke@435	49	// testers
duke@435	50	bool oop_is_typeArray_slow() const { return true; }
duke@435	51
duke@435	52	// klass allocation
coleenp@4142	53	static TypeArrayKlass* create_klass(BasicType type, const char* name_str,
jcoomes@916	54	TRAPS);
coleenp@4037	55	static inline Klass* create_klass(BasicType type, int scale, TRAPS) {
coleenp@4142	56	TypeArrayKlass* tak = create_klass(type, external_name(type), CHECK_NULL);
coleenp@4037	57	assert(scale == (1 << tak->log2_element_size()), "scale must check out");
coleenp@4037	58	return tak;
jcoomes@916	59	}
duke@435	60
duke@435	61	int oop_size(oop obj) const;
duke@435	62
coleenp@4037	63	bool compute_is_subtype_of(Klass* k);
duke@435	64
duke@435	65	// Allocation
kvn@3157	66	typeArrayOop allocate_common(int length, bool do_zero, TRAPS);
kvn@3157	67	typeArrayOop allocate(int length, TRAPS) { return allocate_common(length, true, THREAD); }
duke@435	68	oop multi_allocate(int rank, jint* sizes, TRAPS);
duke@435	69
coleenp@5176	70	oop protection_domain() const { return NULL; }
coleenp@5176	71
duke@435	72	// Copying
duke@435	73	void copy_array(arrayOop s, int src_pos, arrayOop d, int dst_pos, int length, TRAPS);
duke@435	74
duke@435	75	// Iteration
coleenp@4037	76	int oop_oop_iterate(oop obj, ExtendedOopClosure* blk);
coleenp@4037	77	int oop_oop_iterate_m(oop obj, ExtendedOopClosure* blk, MemRegion mr);
duke@435	78
duke@435	79	// Garbage collection
duke@435	80	void oop_follow_contents(oop obj);
duke@435	81	int oop_adjust_pointers(oop obj);
duke@435	82
duke@435	83	// Parallel Scavenge and Parallel Old
duke@435	84	PARALLEL_GC_DECLS
duke@435	85
duke@435	86	protected:
duke@435	87	// Find n'th dimensional array
coleenp@4037	88	virtual Klass* array_klass_impl(bool or_null, int n, TRAPS);
duke@435	89
duke@435	90	// Returns the array class with this class as element type
coleenp@4037	91	virtual Klass* array_klass_impl(bool or_null, TRAPS);
duke@435	92
duke@435	93	public:
coleenp@4037	94	// Casting from Klass*
coleenp@4142	95	static TypeArrayKlass* cast(Klass* k) {
coleenp@4142	96	assert(k->oop_is_typeArray(), "cast to TypeArrayKlass");
coleenp@4142	97	return (TypeArrayKlass*) k;
duke@435	98	}
duke@435	99
duke@435	100	// Naming
duke@435	101	static const char* external_name(BasicType type);
duke@435	102
duke@435	103	// Sizing
coleenp@4142	104	static int header_size() { return sizeof(TypeArrayKlass)/HeapWordSize; }
coleenp@4142	105	int size() const { return ArrayKlass::static_size(header_size()); }
duke@435	106
duke@435	107	// Initialization (virtual from Klass)
duke@435	108	void initialize(TRAPS);
duke@435	109
duke@435	110	public:
duke@435	111	// Printing
coleenp@4037	112	#ifndef PRODUCT
duke@435	113	void oop_print_on(oop obj, outputStream* st);
duke@435	114	#endif
coleenp@4037	115
coleenp@4037	116	void print_on(outputStream* st) const;
coleenp@4037	117	void print_value_on(outputStream* st) const;
coleenp@4037	118
duke@435	119	public:
duke@435	120	const char* internal_name() const;
duke@435	121	};
stefank@2314	122
stefank@2314	123	#endif // SHARE_VM_OOPS_TYPEARRAYKLASS_HPP